en

critical flow

1

Terminological databases

Metroloogia terminibaas

ID 790488 Last modified 12.03.2026
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Domain Standardisation - Metrology
  • voog düüsis, mis on saavutanud düüsi maksimaalse voomahu antud sisselasketingimuste komplekti jaoks
  • vookogus läbi sobiva rõhuvaheseadme juhul, kui mõõtevahendi sissevoo ja väljavoo absoluutrõhu suhe oleks väiksem kui kriitiline väärtus, millest allpool jääb massivoog konstantseks, kui vedeliku väljavoo tingimused (tihedus, temperatuur ja vookiiruse jaotus) ei muutu
  • flow in a nozzle that has attained the maximum flow rate of the nozzle for a given set of inlet conditions
  • flow through a suitable differential pressure device such that ratio of the downstream to the upstream absolute pressure is less than a critical value below which the mass flow-rate remains constant when the upstream fluid conditions (density, temperature and velocity distribution) are unchanged
piirvoog preferred
Usage examples
  • Piirvoog on defineeritud kui voo seisund, kus voomaht muutub sissevoo/väljavoo tingimustest sõltumatuks, st et see on seisund, mille korral rõhu edasine vähendamine ei too kaasa voomahu suurenemist.
critical flow
Usage examples
  • Critical flow is defined as the flow state where the flow rate becomes independent of the outflow conditions, i.e. it is the state where further reduction of pressure does not lead to an increase in flow rate.

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